Writing the Derivation of an argument.?

R

R.S.

New member
Writing the Derivation of an argument.?
I seem to be having some severe issues with the following argument and putting it into a derivation:
D v S
R->P
D-> R
S-> C
(D & C) -> G
G->S
--------
P v S

I can set it up but I get lost on where to start do I provisionally assume something if so what, or do I start by ripping apart the (D&C) -> G?
 
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